i may be way off target here but i have an idea to extract the bootloader. I am willing to risk my friends droid x on it. so from what i understand the bootloader lives on a piece of rom on the motherboard. so it is not in the main storage area. that means its probably not a very big program. So if it does reside on its own little piece of rom there is a chance depending on what type of pic it is that you can use a pic programmer to read the rom. I am not sure if i am off in let field but if i am right it would mean getting the bootloader directly without having to pass throught the phone to get it.
Also on a encryption stand point. I am not the best on this. I was thinking there most be something that unencrypts the kernel and the bootloader so they can talk, because two encrypted things cant talk to eachother i dont think. There has to be something. well i have a pic programmer and i may possibly have a phone i can rip apart let me know if anyone thinks this is legit. I would also need to know where to look. there is obviously going to be alot of pics. i may have to send it to a friend more skilled then me to do the extraction.
I got this idea when i built a programmable christmas lights show at doityourselfchristmas.com. the guys there are great and know a ton about circuitry.